Is there a free software to draw following in ubuntu? How to color the overlap zone? I am not able to figure this out in GIMP.
You can use Inkscape. Basically, you’ll have to break the circles into several parts, one for each possible intersection of circles:
Object → Intersection(
Ctrl + *) to create the intersection.
Ctrl + C).
Ctrl + Z), which deletes the intersection object and restores the original circles.
Ctrl + Alt + V, not
Ctrl + V).
You might also want to use the difference operator (
Ctrl + -) on the outer circles to cut out the shape of the inner parts.
Indeed this is possible in gimp pretty easily.
If you have PowerPoint 2013, you can use the fragment tool to quickly create the individual pieces that you can then freely format as you see fit. See below tutorial.